侧向回流一体化生物膜反应器处理分散式生活污水  

Treatment of decentralized domestic sewage by lateral reflux integrated biofilm reactor

作　　者：汪晨晨 程方奎 吕锡武[1,2] WANG Chenchen;CHENG Fangkui;LU Xiwu(School of Energy and Environment,Nanjing 210096,China;Engineering Research Center of Taihu Lake Water Environment,Wuxi 214000,China)

机构地区：[1]东南大学能源与环境学院,南京210096 [2]东南大学无锡太湖水环境工程研究中心,无锡214000

出　　处：《环境工程学报》2022年第2期621-629,共9页Chinese Journal of Environmental Engineering

基　　金：水体污染控制与治理科技重大专项(2018ZX07701001-016)。

摘　　要：针对农村分散式生活污水的处理,设计了侧向回流一体化生物膜反应器,缩短了污水处理工艺流程,减小了设施占地面积,可以实现污水的就地就近处理,有利于提高农村污水处理的覆盖率。为了寻求反应器的最佳运行条件,在填料填充率为35%的条件下,依次调节反应器运行的水力停留时间和气水比,对COD、氨氮、总氮和总磷的处理效果进行监测。研究结果表明,在反应器填料填充率为35%,水力停留时间为6.5 h,气水比为7.5时,对COD、氨氮、总氮和总磷的去除率分别为94.04%、98.25%、47.89%和35.08%。侧向回流一体化生物膜反应器出水COD和氨氮的水质可以满足江苏省农村生活污水排放的地方标准《农村生活污水处理设施水污染物排放标准》(DB32/3462-2020)中的一级A水质标准的要求;利用该设备对总氮和总磷的处理则需要结合反应器的实际日处理能力选择是否增加生态处理设施。For the treatment of decentralized domestic sewage in rural areas,a lateral reflux integrated biofilm reactor was designed,which shortens the sewage treatment process,reduces the floor space of the facility,realizes the local and nearby treatment of sewage,and is conducive to improving the coverage of rural sewage treatment.In order to find the optimum operating conditions of the reactor,the hydraulic retention time and gaswater ratio of the reactor were adjusted successively when the filler filling rate was 35%,and the treatment performances of COD,ammonia nitrogen,total nitrogen and total phosphorus were evaluated.The results showed that when the filler filling rate was 35%,the hydraulic retention time was 6.5 h,and the ratio of air to water was 7.5,the removal efficiencies of the COD,ammonia nitrogen,total nitrogen and total phosphorus were94.04%,98.25%,47.89%and 35.08%,respectively.The effluent water quality of COD and ammonia nitrogen in the lateral reflux integrated biofilm reactor can meet the level A of the local standard for rural domestic sewage discharge in Jiangsu Province"Water Pollutant Discharge Standard for Rural Domestic Sewage Treatment Facilities"(DB32/3462-2020),and for the treatment of total nitrogen and total phosphorus,it is necessary to choose whether to add ecological treatment facilities in combination with the actual daily treatment capacity of the reactor when it is used to remove total nitrogen and total phosphorus.

关 键 词：农村卫生 分散式污水 就地就近处理 一体化反应器 生物膜法 

分 类 号：X703.1[环境科学与工程—环境工程]